What was the (e.g., a software mod, a project file, a data dump)?
If you have more information about where you encountered this file or its intended purpose, please share it. To help you further, could you tell me: Where did you or find this file?
Without specific context, such as a file description, a link to the source, or a list of its contents, it is impossible to determine what that file contains.
Files with .rar extensions can contain any type of file, including executable code.